15 " in vivo " and " in vitro " TWO DIMENSIONAL lH NMR SPECTROSCOPY. The nucleus most frequently used for Nuclear Magnetic Resonance (NMR) spectroscopy studies in living tissues has, until recently, undoubtedly been 3 1 P. 3 1 P NMR is very sensitive, the spectra are simple because of the wide available spectral range, the relatively few accessible molecules and the small number of 3 *P nuclei ...

Photo-chemically induced nuclear polarization yields to NMR signal-to-noise enhancement and can be tuned by chemical modification of one the radical-pair partners.

NMR spectroscopy is the go-to technique for determining the solution structures of organic, organometallic, and even macromolecular species. However, structure determination of nanoscale aqueous inorganic clusters by NMR spectroscopy remains an unexplored territory. The few hydroxobridged inorganic species well characterized by H Nuclear Magnetic Resonance spectroscopy (H-NMR) do not provide en...

NMR spectra of mammalian cells are taken using surface microprobes that are based on microfabricated planar coils. The surface microprobe resembles a miniaturized Petri dish commonly used in biological research. The diameter of the planar coils is 1 mm. Chinese Hamster Ovaries are immobilized in a uniform layer on the microprobe surface or patterned by an ink-jet printer in the centre of the mi...

Due to the key position of phosphorus-containing compounds in biology, favour­ able NMR properties of 3 I P nucleus and its 100 % natural abundance, 3 1 P NMR has become a valuable biochemical method. It gives, for example, information about DNA conformation since 3 I P NMR chemical shift is sensitive to the phosphodiester linkage geometry (Gorenstein 1984). 3 1 P NMR reflects base sequence — d...

The known biological functions of RNA have expanded in recent years and now include gene regulation, maintenance of sub-cellular structure, and catalysis, in addition to propagation of genetic information. As for proteins, RNA function is tightly correlated with structure. Unlike proteins, structural information for larger, biologically functional RNAs is relatively limited. NMR signal degenera...

A miniature (1.73 mm in diameter) NMR probe, which contains a magnet and a radiofrequency (RF) coil, is presented. This probe is integrated at the tip of a standard catheter and can be inserted into the human coronary arteries, creating local magnetic fields needed to obtain the NMR signal from the blood vessel walls, without the need for external magnet or RF coils. The basic theory governing ...

Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) are two extremely important techniques with applications ranging from molecular structure determination to human imaging. However, in many cases the applicability of NMR and MRI are limited by inherently poor sensitivity and insufficient nuclear spin lifetime. Here we demonstrate a cost-efficient and fast technique that tackl...

Water has a significant impact on the properties of building materials. A nuclear magnetic resonance (NMR) spectrometer can be used to detect water in materials and measure its distribution nondestructively, rapidly, accurately. In this paper, novel method is introduced for using single-sided NMR content (WC) materials, including brick, sandstone, mortar, concrete. The signal intensity these we...

2H Magic-angle spinning nuclear magnetic resonance (MAS NMR), echo 27Al NMR, two-dimensional (2D) echo 1H MAS NMR and 1H, 27Al and 29Si MAS NMR have been applied to study the acid sites of dehydrated zeolites. The quadrupole coupling constants CQCC determined from 2H MAS NMR spectra of Si-OH-Al sites increase with the framework aluminium content of the zeolites from 208 Hz (H-ZSM-5) to 236 kHz ...